(19)
(11) EP 2 623 710 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.04.2014 Bulletin 2014/17

(43) Date of publication A2:
07.08.2013 Bulletin 2013/32

(21) Application number: 13154266.4

(22) Date of filing: 06.02.2013
(51) International Patent Classification (IPC): 
F01C 21/06(2006.01)
 F01C 1/22(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 06.02.2012 US 201213366458

(71) Applicant: Pratt & Whitney Canada Corp.
(01BE5)Longueuil, QC J4G 1A1 (CA)

(72) Inventors:
  • Gekht, Eugene
    Brossard, Québec J4X 2P2 (CA)
  • Villeneuve, Bruno
    Boucherville, Québec J4B 5G1 (CA)
  • Fontaine, Mike
    Boucherville, Québec J4B 7W9 (CA)
  • Gagnon-Martin, David
    Longueuil, Québec J4J 5L3 (CA)

(74) Representative: Leckey, David Herbert 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Rotary internal combustion engine with cooled insert


(57) A rotary internal combustion engine (10) has an insert opening (36) defined in a hot area of one of the walls (18) of the stator body (12) and in communication with its internal cavity (20). At least one groove (58) is defined within the opening (36) around a perimeter thereof. At least one coolant inlet channel (88) is defined therein in communication with each groove (58), and at least one coolant outlet channel (90) is defined therein in communication with each groove (58). A cooling jacket (50) lines the insert opening (36), the cooling jacket (50) cooperating with each groove (58) to define a cooling gallery (62) around the insert opening (36). An insert (34) is sealingly received in the cooling jacket (50), the insert (34) being made of a material having a greater heat resistance than that of the wall (18).







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Search report